At about 12:05 AM on Saturday, November 21, 2015, members of the Youth Violence Strike Force responded to a radio call for a ShotSpotter activation in the area of 1176 Tremont Street in District B-2 (Roxbury).

While canvassing the area for possible witnesses, victims, or suspects in relation to the shots fired, officers observed a group of five males nearby in the area of 40 Raynor Circle. Officers approached the group to ask whether they heard or saw anything suspicious when one of the males broke away from the group and walked towards a parked motor vehicle. Officers observed the male crouch down next to the car, obscuring his waist area from the officers. Having made numerous arrests for firearm related offenses and being trained by the ATF in characteristics of an armed gunman, the officers believed that the male was intentionally hiding from officers and attempting to discard a weapon. As the officers got closer to the male they heard a clanking noise coming from under the vehicle consistent with a metal object hitting the pavement. Officers were able to gain control of the male, and upon looking under the vehicle, officers observed a firearm with a brown handle. For officer safety, all five males were momentarily detained until the firearm and the area were made safe. Further investigation allowed officers to recover a loaded black Norinco Model 59 firearm from under the vehicle. Officers were informed that the male did not have a License to Carry.

Officers arrested 21-year-old Anthony Flores of Jamaica Plain and charged him with Unlawful Possession of a Firearm, Unlawful Possession of Ammunition, and Carrying a Loaded Firearm. All other individuals were identified and released.